Wu Yu still did not know how wide the area of the Ghost Sea Prison was.

But he knew how deep it was. From the start, he had headed down diagonally. Although not at a great pace, he reached the sea floor after half a day.

In such an open sea region, it was very difficult to find a place to hide oneself. And there were many marine trenches, underwater forests, and even mountainous landforms at the sea bed of the Ghost Sea Prison, which all served as hiding spots.

Therefore, a majority of the demons were here at the sea floor. Logically, one would have a higher chance of meeting demons the deeper one went.

And that was why Wu Yu was currently at the bottom of the sea.

There was a thick, black silt here at the bottom, which hid many demons. Wu Yu began to search with his Eyes of Fire and Gold. Many others were searching as well. But this was just the beginning, and the demons were all well-hidden - it would not be easy to find them.

Most of the time, it was the demons who would come knocking.

However, it was said that...